scholarly journals A New Class of the Planar Networks with High Clustering and High Entropy

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Guona Hu ◽  
Yuzhi Xiao ◽  
Huanshen Jia ◽  
Haixing Zhao
Keyword(s):  
High Entropy ◽  
New Class ◽  
Planar Networks

Layered High-Entropy Oxide Structures for Reversible Energy Storage

2020 ◽  
Author(s):  
Junbo Wang ◽  
Yanyan Cui ◽  
Qingsong Wang ◽  
Kai Wang ◽  
Xiaohui Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Cathode Material ◽  
Spray Pyrolysis ◽  
Lattice Structure ◽  
Oxide Materials ◽  
High Entropy ◽  
New Class ◽  
Nebulized Spray Pyrolysis

<p>Layered Li<i><sub>x</sub></i>MO<sub>2</sub> materials, a new class of high-entropy oxides, have been synthesized by nebulized spray pyrolysis. Specifically, the lattice structure of Li(Ni<sub>1/3</sub>Mn<sub>1/3</sub>Co<sub>1/3</sub>)O<sub>2</sub> (NCM111) cathode material has been replicated successfully while increasing the number of cations in equimolar proportions, thereby allowing transition to high-entropy oxide materials.</p>

A promising new class of irradiation tolerant materials: Ti2ZrHfV0.5Mo0.2 high-entropy alloy

2019 ◽  
Vol 35 (3) ◽  
pp. 369-373 ◽  
Author(s):  
Yiping Lu ◽  
Hefei Huang ◽  
Xuzhou Gao ◽  
Cuilan Ren ◽  
Jie Gao ◽  
...  
Keyword(s):  
High Entropy Alloy ◽  
High Entropy ◽  
New Class

scholarly journals HIGH-ENTROPY ALLOYS AS A PROSPECTIVE CLASS OF NEW RADIATION-TOLERANT MATERIALS RESEARCH DEVELOPMENT ANALYSIS BASED ON THE INFORMATION DATABASES

2021 ◽  
pp. 3-15
Author(s):  
A.V. Levenets ◽  
M.A. Tikhonovsky ◽  
V.N. Voyevodin ◽  
A.G. Shepelev ◽  
O.V. Nemashkalo
Keyword(s):  
Radiation Damage ◽  
Exponential Growth ◽  
High Entropy Alloys ◽  
Research Development ◽  
Metallic Materials ◽  
High Entropy ◽  
New Class ◽  
Materials Research ◽  
Development Analysis ◽  
Radiation Tolerant

A new class of metallic materials, so-called “high-entropy alloys” (HEAs), was under review. Various definitions of these alloys are given, their main differences from the conventional alloys are indicated and the dynamics of publications in the period from the first publications in 2004 to the end of 2020 are presented. It is noted the almost exponential growth of the article numbers concerning these alloys, and the main reasons of such high interest are discussed. Experimental results of development the radiation-tolerant materials based on the concept of high-entropy alloys and study of the radiation damage mechanisms are summarised.

scholarly journals Operando acoustic emission monitoring of degradation processes in lithium-ion batteries with a high-entropy oxide anode

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Simon Schweidler ◽  
Sören Lukas Dreyer ◽  
Ben Breitung ◽  
Torsten Brezesinski
Keyword(s):  
Acoustic Emission ◽  
Electrode Materials ◽  
Solid Electrolyte Interphase ◽  
High Capacity ◽  
Lithium Ion ◽  
Mechanical Degradation ◽  
High Entropy ◽  
New Class ◽  
Degradation Processes ◽  
Systematic Understanding

AbstractIn recent years, high-entropy oxides are receiving increasing attention for electrochemical energy-storage applications. Among them, the rocksalt (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O (HEO) has been shown to be a promising high-capacity anode material. Because high-entropy oxides constitute a new class of electrode materials, systematic understanding of their behavior during ion insertion and extraction is yet to be established. Here, we probe the conversion-type HEO material in lithium half-cells by acoustic emission (AE) monitoring. Especially the clustering of AE signals allows for correlations of acoustic events with various processes. The initial cycle was found to be the most acoustically active because of solid-electrolyte interphase formation and chemo-mechanical degradation. In the subsequent cycles, AE was mainly detected during delithiation, a finding we attribute to the progressive crack formation and propagation. Overall, the data confirm that the AE technology as a non-destructive operando technique holds promise for gaining insight into the degradation processes occurring in battery cells during cycling.

scholarly journals Ultrastrong lightweight compositionally complex steels via dual-nanoprecipitation

2020 ◽  
Vol 6 (46) ◽  
pp. eaba9543 ◽  
Author(s):  
Zhangwei Wang ◽  
Wenjun Lu ◽  
Huan Zhao ◽  
Christian H. Liebscher ◽  
Junyang He ◽  
...  
Keyword(s):  
High Performance ◽  
Energy Savings ◽  
Tensile Elongation ◽  
High Strength ◽  
Metallic Materials ◽  
Principal Element ◽  
High Entropy ◽  
Solid Solution Strengthening ◽  
New Class ◽  
Solution Strengthening

High-performance lightweight materials are urgently needed, given the pressing quest for weight reduction and the associated energy savings and emission reduction. Here, by incorporating the multi–principal element feature of compositionally complex alloys, we develop the concept of lightweight steels further and propose a new class of compositionally complex steels (CCSs). This approach allows us to use the high solid solution strengthening and shift the alloys’ compositions into previously unattainable phase regions where both nanosized shearable κ-carbides and non-shearable B2 particles are simultaneously formed. The achievement of dual-nanoprecipitation in our CCSs leads to materials with ultrahigh specific tensile strength (up to 260 MPa·cm3 g−1) and excellent tensile elongation (13 to 38%), a combination outperforming all other high-strength high-entropy alloys and advanced lightweight steels. Our concept of CCSs is thus useful for guiding the design of ultrastrong lightweight metallic materials.

Reaction synthesis and characterization of a new class high entropy carbide (NbTaMoW)C

2020 ◽  
pp. 140520 ◽  
Author(s):  
Diqiang Liu ◽  
Aijun Zhang ◽  
Jiangang Jia ◽  
Junyan Zhang ◽  
Junhu Meng
Keyword(s):  
Synthesis And Characterization ◽  
Reaction Synthesis ◽  
High Entropy ◽  
New Class

A new class of light-weight metastable high entropy alloy with high strength and large ductility

Materialia ◽  
2021 ◽  
pp. 101284
Author(s):  
Kook Noh Yoon ◽  
Hyun Seok Oh ◽  
Ji Young Kim ◽  
Min Seok Kim ◽  
Jing Zhang ◽  
...  
Keyword(s):  
High Strength ◽  
High Entropy Alloy ◽  
Light Weight ◽  
High Entropy ◽  
New Class

A new class of high-entropy perovskite oxides

2018 ◽  
Vol 142 ◽  
pp. 116-120 ◽  
Author(s):  
Sicong Jiang ◽  
Tao Hu ◽  
Joshua Gild ◽  
Naixie Zhou ◽  
Jiuyuan Nie ◽  
...  
Keyword(s):  
Perovskite Oxides ◽  
High Entropy ◽  
New Class

scholarly journals Lithium containing layered high entropy oxide structures

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Junbo Wang ◽  
Yanyan Cui ◽  
Qingsong Wang ◽  
Kai Wang ◽  
Xiaohui Huang ◽  
...  
Keyword(s):  
Single Phase ◽  
Structure Type ◽  
Metal Species ◽  
Icp Oes ◽  
High Entropy ◽  
Solution Structures ◽  
New Class ◽  
Nebulized Spray Pyrolysis

Abstract Layered Delafossite-type Lix(M1M2M3M4M5…Mn)O2 materials, a new class of high-entropy oxides, were synthesized by nebulized spray pyrolysis and subsequent high-temperature annealing. Various metal species (M = Ni, Co, Mn, Al, Fe, Zn, Cr, Ti, Zr, Cu) could be incorporated into this structure type, and in most cases, single-phase oxides were obtained. Delafossite structures are well known and the related materials are used in different fields of application, especially in electrochemical energy storage (e.g., LiNixCoyMnzO2 [NCM]). The transfer of the high-entropy concept to this type of materials and the successful structural replication enabled the preparation of novel compounds with unprecedented properties. Here, we report on the characterization of a series of Delafossite-type high-entropy oxides by means of TEM, SEM, XPS, ICP-OES, Mössbauer spectroscopy, XRD including Rietveld refinement analysis, SAED and STEM mapping and discuss about the role of entropy stabilization. Our experimental data indicate the formation of uniform solid-solution structures with some Li/M mixing.

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